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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-04-17 07:46:25 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-04-17 07:47:05 +0200 |
| commit | 5a62b192196af9a798e2f2f4c6a1324e7edf2f4b (patch) | |
| tree | 0aa96ba3153b257000be22e49befbde2b5bd6917 /drivers/s390/cio/cio.c | |
| parent | d7b906897e9caae452947e33674df0a2d6f7e10f (diff) | |
| download | op-kernel-dev-5a62b192196af9a798e2f2f4c6a1324e7edf2f4b.zip op-kernel-dev-5a62b192196af9a798e2f2f4c6a1324e7edf2f4b.tar.gz | |
[S390] Convert s390 to GENERIC_CLOCKEVENTS.
This way we get rid of s390's NO_IDLE_HZ and use the generic dynticks
variant instead. In addition we get high resolution timers for free.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/cio.c')
| -rw-r--r-- | drivers/s390/cio/cio.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 6dbe948..41db3cc 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -651,12 +651,9 @@ do_IRQ (struct pt_regs *regs) old_regs = set_irq_regs(regs); irq_enter(); s390_idle_check(); - if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer) - /** - * Make sure that the i/o interrupt did not "overtake" - * the last HZ timer interrupt. - */ - account_ticks(S390_lowcore.int_clock); + if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator) + /* Serve timer interrupts first. */ + clock_comparator_work(); /* * Get interrupt information from lowcore */ |
